Improvement in hand-planers



21.*P. aRosvENoR.

yHand-Planrs.

N0.l52,354. l Patenrtedjune23,l874.

UNITED STATES PATENT FFICE.

' JONATHAN P. GROSVENOR, OF LOWELL, MASSACHUSETTS.

IMPROVEMENT IN HAND-PLANERS.

Specification forming part of Letters Patent No. 152.364, dated June-23, 1874 application tiled 4 March 13, 1871. v

To all whom tt may concern:

Be it known that I, JONATHAN P. Gnosvn- NOR, of the city of Lowell, inthe county of Middlesex and State of Massachusetts, have invented a newand useful Improvement in Hand-Planers, and I do hereby declare that thefollowing is a full and exact description thereof, reference being hadto the accompanyin g drawings forming a part of this specification, andto the letters of reference marked thereon.

My invention relates to certain improvements in buzz or hand-planingmachines, in which the lumber is fed to the cutter by hand; and itsobject is to construct the table in such a manner that, while onesection of the same which receives the board after leaving the cuttersis rigidly secured to the frame ot' the machine, the other section maybe adjusted both vertically and horizontally by a single movement, so asboth to determine the thickness oi' the shaving to be taken on", andalso to regulate the width of the throat, or distance of the inner endof the adjustable portion of the table from the cutters, the latterheilig thereby kept the same width whether the table is raised orlowered.

The nature of my invention consists in making that portion of the tableupon which the rough board is laid in such a manner that it may beadjusted both horizontally and ver. tically simultaneously and by onemovement, while the other portion which receives the smooth surface ofthe board after leaving the cutters is rigidly secured to the frame ofthe machine, with its upper surface on a straight line with the top ofthe cutter. This double adjustment of the portion ot' the table uponwhich the rough board is laid is eiiected by securingA the said portionot'. the table to a wedgeshaped block, which works on an incline securedto the frame of the machine, and which is adjusted by means of anadjusting-screw, so that when it is pushed forward toward the cuttersthe table is raised at the same time, and the said incline is at such anangle with the plane ot' the table that the inner end ofthe adjustableportion of the table is always kept at the same distance from the Arepresents the frame ot' the machine,l

which may be made ot' suitable material, and ot' such form anddimensions as may be adapted for receiving and holding my improvements.B is the cutter-head, which may be ot' any of the common or well-knownforms. C is the pulley, to which the power is applied for driving thecutter. D represents that portion of the table which receives the smoothsurface ot' the board after leaving the cutters, and which is rigidlysecured to the frame A in such a position that its upper surface is on aline with the top of the cutters. E represents the adjustable portion ofv the table in front of the cutters, 011 which the rough board is laid,which is`secured to the adjustable wedge-shaped block F, the latter ot'which works upon an incline, Gr, secured to the frame of the machine,and is iitted thereto in an y suitable manner. The block F is adjustedby means of an adj Listing-screw, I, which may be located in anyposition'that may be adapted to enable the same properly to perform itsfunction. The incline above mentioned vforms such an angle with theplane of the portion E of the table that the inner end a of the latterwill maintain nearly an equal distance from the line of motion of. theedges ot' the cutters, whether the block F is moved upward on theincline so as to reduce the thickness ot' the shaving, or downward so aslto increase the thickness of the same. It will therefore be 'seen thatthe samedistance, or nearly the `same distance, is maintained betweenthe end a of the portion E of the table and the cutters, whether a thinor a thick shaving; is being taken ott', thus insuring safety to theoperator and regularityT and precision in the operation of the lnachine.

Having thus described my invention I may state that I do not claimadjusting` both seetions ot' the table by means of inelines; nor do Iclaim adjusting one section thereof vertically and horizontally by twodistinct and separate movements or means of adjustment; neither do Iela-im adjusting a table behind the cutters on an incline.v

I hereby fully disclaim the patent `of Gli mer and Riley, November 27,1866, and of Fred. Douglas, July 26, 1870, all for improvements inplaning-machines, which have been given as references in this case; but

What I elaiin as new, and desire to seeure by Letters Patent of theUnited States, is

The adjustable feed-table E, adjustable vertically and longitudinally bya single movement, arranged in front of and combined with the revolvingcutter B, which turns in ix'ed boxes, as and for the purpose set forth.

JONATHAN I. GROSVENOP.

Vitnesses:

'WM. VENTZ, JOHN S. THORNTON.

